JEE Advanced Model Paper 15 with solutions for online practice

There are three charges Q1 columb Q2 columb and Q3 columb . Q2 and Q3 are fixed at positive (0, 0) and (30, 0) respectively. Now Q1 moves in circular path in x-y plane of radius 40 m with help of external agent starting from (0,40) about origin then work done by external agent is [till Q1 crosses x axis (40, 0), given co-ordinates are in centimeters